Fertilization News and Research

RSS

Study reveals an increasing proportion of women giving birth at 40+

An increasing proportion of women aged 40 and over in Sweden and Denmark are giving birth. Nevertheless, over a recent 10-year period, the need for assisted reproduction for women over 40 in Scandinavia has doubled, a study led by University of Gothenburg researchers shows.

11 Jan 2022

Children conceived with assisted reproductive techniques are not at risk of poor psychiatric health

Use of assisted reproductive techniques (ART) does not lead to poorer mental health in children across adolescence and young adulthood, according to a large observational study led by researchers at Karolinska Institutet in Sweden.

15 Dec 2021

Cells with oncogenic mutations overtake human tissue with age, research shows

It's worth noting, in light of recently published research, that a majority of people won't be diagnosed with cancer in their lifetimes. According to the National Cancer Institute, about 40% of people will, which means 60% won't.

14 Dec 2021

Researchers uncover the journey of microglia in developing zebrafish

Microglia, the immune cells of the brain, form the first line of defense against neurodegenerative diseases and traumatic brain injuries.

8 Dec 2021

Research offers a phylogenetic and ontogenetic overview of the primitive streak

In their publication in Science, Professor Guojun Sheng (Kumamoto University, Japan), Professor Alfonso Martinez Arias (Universidad Pompeu Fabra, Spain) and Professor Ann Sutherland (University of Virginia Health System, USA) offer a phylogenetic and ontogenetic overview of the primitive streak and its role in mediating amniote (vertebrate animals that develop on land) gastrulation, and discuss the implications of embryonic stem cell-based models of early mammalian embryogenesis on the function of this structure.

4 Dec 2021

Researchers shed light on an important stage of early human embryogenesis for the first time

Scientists have shed light on an important stage of early embryonic development that has never been fully mapped out in humans before.

29 Nov 2021

UGA study makes breakthrough for treatment of male infertility

With global rates of male infertility continuing to rise, a new study in spermatogonial stem cell research led by researchers at the University of Georgia provides hope for future clinical therapies.

19 Oct 2021

Mothers pass on the legacy of stress exposure to future generations

A mother's response to stress can even influence her grandchildren. Biologists at the University of Iowa found that roundworm mothers subjected to heat stress passed, under certain conditions and through modifications to their genes, the legacy of that stress exposure not only to their offspring but even to their offspring's children.

13 Oct 2021

Using genetic screening for selecting the 'best' embryo in IVF

Each year, tens of thousands of babies are born in the United States as the result of IVF (in vitro fertilization) – where several eggs are fertilized outside the mother's body and then an embryo is selected for transfer into her womb.

12 Oct 2021

Collins’ skillful piloting helped NIH steer clear of political minefields

It's remarkable that the reputation of the National Institutes of Health has remained mostly intact through the covid-19 pandemic, even as other federal science agencies, including the Food and Drug Administration and Centers for Disease Control and Prevention, have come under partisan fire.

6 Oct 2021

Scientists create a novel cell model for understanding human development

The earliest moments of human development—between the time of fertilization and when the embryo implants in the womb—have remained opaque to scientists.

9 Sep 2021

Optimized strategy for generating male germ-cells from mouse pluripotent stem cells

For species that rely on sexual reproduction, including mice and men, offspring can only happen if sperm from the male fertilize eggs from the female.

7 Sep 2021

Growing wheat varieties with biological nitrification inhibition trait could increase yields

An international collaboration has discovered and transferred to elite wheat varieties a wild-grass chromosome segment that causes roots to secrete natural inhibitors of nitrification, offering a way to dial back on heavy fertilizer use for wheat and to reduce the crop's nitrogen leakage into waterways and air, while maintaining or raising its productivity and grain quality, says a new report in the Proceedings of the National Academy of Sciences of the United States of America.

2 Sep 2021

Study discovers lagging chromosomes as one of the major causes of infertility

Why do women over 35 have more difficulty getting pregnant? After discovering one of the causes of age-related female infertility, researchers at the University of Montreal Hospital Research Centre suggest that it will be possible in the future to improve the quality of the eggs of older patients by intervening on the cell cycle level.

23 Aug 2021

Researchers identify key protein that plays an essential role in male fertility

Mammalian sperm cannot fertilize an egg from the get-go. It's an ability acquired only after insemination, during passage through the female reproductive tract, and requires two consecutive, time-sensitive processes to provide sperm with the physical and biochemical traits necessary to complete their fundamental job.

20 Aug 2021

Study reveals mechanism behind male infertility caused by autoimmune disease

Investigators have found that the absence of autoimmune regulator (Aire) in mice results in fertility problems similar to those affecting men with autoimmune polyendocrine syndrome type I (APS-1).

19 Aug 2021

Feinstein Institutes awarded $2.9 million NIH funding for polygenic embryo selection studies

Genetic testing and selection of embryos generated from in vitro fertilization have given rise to the controversial “designer baby” debate.

4 Aug 2021

Eggs and embryos go through a more dynamic and complex journey than previously thought

The journey of the egg and the embryo through the fallopian tube or oviduct toward the uterus is not well understood, mainly because it is inaccessible for direct imaging.

14 Jul 2021

Study finds higher risk of pre-eclampsia, hypertension in pregnancies derived from frozen embryos

A large cohort study drawn from the national IVF registry of France, which included almost 70,000 pregnancies delivered after 22 weeks gestation between 2013 and 2018, has found a higher risk of pre-eclampsia and hypertension in pregnancies derived from frozen-thawed embryos.

30 Jun 2021

Higher risk of preeclampsia and pregnancy-induced hypertension as a result of embryo freezing for IVF

Researchers have established a strong association between the risk of developing hypertension and the artificial cycle for frozen-thawed embryo transfer.